remcos | e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5

General

Target

e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
Size

2.1MB
MD5

28d6851d2b3ef85f1691bcb09b31a183
SHA1

9b3f8b01821ea4980ca30f49672db310043db5fb
SHA256

e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5
SHA512

274e61c4e20847df391437cf5e7b7622b94b9fdb91fa7b70fb02f01cf5d11df9ece737eb8a32b5c284ed77fd49e53abff00246487458eda97952e64556ed069d
SSDEEP

24576:ED39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73AneLKJJ4j:Ep7E+QrFUBgq2Kj

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe

Executes dropped EXE 2 IoCs

pid	Process
4512	sbietrcl.exe
1308	sbietrcl.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4512 set thread context of 1308	4512	sbietrcl.exe	94

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
4512	sbietrcl.exe
4512	sbietrcl.exe
4512	sbietrcl.exe
4512	sbietrcl.exe
4512	sbietrcl.exe
4512	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
Token: SeDebugPrivilege	4512	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 4512	4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe	91
PID 4032 wrote to memory of 4512	4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe	91
PID 4032 wrote to memory of 4512	4032	e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe	91
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94
PID 4512 wrote to memory of 1308	4512	sbietrcl.exe	94

C:\Users\Admin\AppData\Local\Temp\e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe
"C:\Users\Admin\AppData\Local\Temp\e008590dc22ef3e97b3a5087421ca315e4ab71e8c459bd17c5b17ff57a71bcb5.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4512
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:1308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
2.1MB

MD5
874e65a7db6bdb33503b158e50414366

SHA1
4744e6f131ed22661fcc92e672869dd56a62fd66

SHA256
f4e3a0bd0b759d9d1ec8fec047ea7ff50ea0e1a81f7d6fccca76b2fd99c215d5

SHA512
656c259b0b16e10dd7336ba7e711a8df7e3e28f54d9cb3b0e35ed04a93e63d97de0f0dfbe11aa627ae743b3c2bf138c12163271bb5fdc11aa5e7e4843c7036b4

Download Submit
memory/1308-34-0x0000000000520000-0x0000000000537000-memory.dmp

Filesize
92KB

Download
memory/4032-3-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4032-0-0x00000000748D2000-0x00000000748D3000-memory.dmp

Filesize
4KB

Download
memory/4032-15-0x00000000748D2000-0x00000000748D3000-memory.dmp

Filesize
4KB

Download
memory/4032-16-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4032-2-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4032-27-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4032-1-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4512-28-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4512-29-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4512-30-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4512-31-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download
memory/4512-38-0x00000000748D0000-0x0000000074E81000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads